senator john mccain telling your "this week" show yesterday, he thinks the time is right, especially given the power of latino voters in the last election. >> lot of momentum behind that now. >>> let's get the rest of the morning headlines from david muir, weekend anchor in for josh. >>> good morning, everyone. we're going to begin this morning with the search for answers after that horrific nightclub tragedy. at least 230 people were trapped and killed in a fire that engulfed a packed dance club in brazil. the club with just one exit became a death trap in seconds. matt gutman is in brazil with new details on how the fire started and why there was no other way out. matt, good morning. >> reporter: good morning, david. it is impossible to underestimate the impact that this has had in brazil. check out these headlines, banner headlines everywhere here today. and largely because those killed were so young, mostly college students and minors. and because this mostly was avoidable. this morning, images of inconsolable grief. investigators say the fire that claimed the lives of more than